Gasteruption formilis Alekseev, 1995

Zhao, Ke-xin, Achterberg, Cornelis van & Xu, Zai-fu, 2012, A revision of the Chinese Gasteruptiidae (Hymenoptera, Evanioidea), ZooKeys 237, pp. 1-123 : 39-42

Gasteruption formilis Alekseev, 1995 Figs 111123

Gasteruption formilis Alekseev, 1995: 42 (in key only).

Type material.

Not available.

Other material.

1 ♀ + 1 ♂ (ZJUH), "[China:] Gansu, Zhenyuan, VII.1981, Wei Cao"; 1 ♂ (ZJUH), "[China:] Xinjiang, Aletai, 25.VII.1990, Deng-yuan Wang"; 1 ♂ (ZJUH), "[China:] Xinjiang, Tacheng, 11.VII.1988, Qi Ma".

Diagnosis.

Ovipositor sheath 0.5-0.6 times as long as hind tibia and tarsus combined, about 0.4 times as long as metasoma and as long as hind tibia; hypopygium comparatively shallowly emarginate posteriorly; apex of ovipositor sheath black or dark brown; mesoscutum rather finely and very irregularly rugulose or rugose (Fig. 113; males have rugose, females anteriorly rugulose); hind tibia about 1.2 times as long as hind femur and trochanter and less swollen (Fig. 114); hind basitarsus comparatively short and wide (Fig. 114); head truncate medio-posteriorly or nearly so; vertex and frons matt and more or less coriaceous (Fig. 116); occipital carina obsolescent to narrowly lamelliform medio-dorsally (Fig. 111); clypeus with large shallow depression up to dorsal third (Fig. 115, 122); apical antennal segment 1.4-1.5 times third antennal segment; malar space 0.1-0.3 times as long as second antennal segment (= pedicellus); propleuron 0.7-0.8 times as long as mesoscutum in front of tegulae, robust (Fig. 112); median carina of propodeum absent (but sometimes a slightly elevated smooth median line).

Description.

Described from a female from Gansu (Zhenyuan), body length 8.5 mm, of fore wing 4.5 mm.

Head. Head directly narrowed behind eyes and weakly curved laterally (Fig. 116); temple 0.6 times as long as eye in dorsal view; vertex and frons matt and finely rugulose; vertex moderately convex posteriorly (Fig. 111) and without depression medio-posteriorly (Fig. 116); occipital carina narrow and non-lamelliform medio-dorsally (Fig. 111); third antennal segment 1.5 times as long as second segment, fourth antennal segment as long as third segment, fifth antennal segment 0.9 times as long as third segment (Fig. 118); eye glabrous; OOL 1.7 times as long as diameter of posterior ocellus; minimum width of malar space 0.2 times as long as second antennal segment; clypeus with a distinct depression (Fig. 115).

Mesosoma. Length of mesosoma 1.7 times as long as its height; propleuron with rugulose, 0.8 times as long as mesoscutum in front of tegulae (Fig. 112); side of pronotum reticulate-rugose or rugose; mesoscutum and scutellum rugose (Fig. 113); propodeum reticulate-rugose, medio-longitudinal carina indistinct.

Wings. Fore wing: first discal cell small and subtriangular, m-cu short (Fig. 117).

Legs. Hind coxa robust and dorsally rugose; length of hind femur, tibia and basitarsus 4.3, 3.7 and 4.0 times their width, respectively (Fig. 114); middle tarsus 1.1 times as long as middle tibia; hind tibia 2.0 mm.

Metasoma. Ovipositor sheath 0.2 times as long as body, 0.4 times as long as metasoma, 0.5-0.6 times as long as hind tibia and tarsus combined and as long as hind tibia; hypopygium v-shaped incised apically.

Colour. Dark brown; pronotum red; mesoscutum black-brown; medio-longitudinal part of propodeum red; second-fifth metasomal tergites with red band; wing membrane slightly infuscate; pterostigma dark brown.

Male (described after a male from Xinjiang). Body length 10.0 mm; temple 0.75 times as long as eye in dorsal view (Fig. 119); third antennal segment 1.5 times as long as second segment, fourth and fifth antennal segment as long as third segment (Fig. 121); OOL 1.3 times as long as diameter of posterior ocellus; minimum width of malar space 0.2 times as long as second antennal segment; length of mesosoma 1.7 times as long as its height; side of pronotum reticulate-rugose or rugose; mesoscutum coarsely rugose, posteriorly coarsely reticulate-rugose (Fig. 120); scutellum rugose; medio-longitudinal carina of propodeum indistinct; length of hind femur, tibia and basitarsus 4.3, 3.7 and 5.0 times their width, respectively (Fig. 123); middle tarsus 1.1 times as long as middle tibia; colour of body black; mandible dark brown; legs (except for coxae black) dark brown; matasoma dark brown, but second-fifth metasomal tergites apically red.

Variation. Male: Body length about 10.0-11.5 mm.

Distribution.

Palaearctic China (Gansu, Xinjiang).

Biology.

Unknown. Collected in July.